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| From: | Avi Kivity |
| Subject: | [Qemu-devel] Re: [Qemu-commits] [COMMIT a4b18c6] tcg/x86_64: generated dec/inc instead of sub/addwhen possible |
| Date: | Mon, 28 Sep 2009 09:51:12 +0200 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3 |
On 09/27/2009 06:13 PM, Anthony Liguori wrote:
From: Aurelien Jarno<address@hidden>
Intel recommends not using inc/dec. Since these instructions don't update all of the flags, they cannot be issued in parallel to previous instructions that do.
-- Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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